OPTICAL FILM

摘要

PROBLEM TO BE SOLVED: To provide an optical film with low birefringence caused by drawing and small photoelastic coefficient. SOLUTION: The optical film composed of a block copolymer comprising a polymer block A comprising at least an aromatic vinyl hydrocarbon as an essential component and a block B comprising a polymer comprising at least a conjugated diene as an essential component. COPYRIGHT: (C)2007,JPO&INPIT